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Home Gemstones Untreated Gemstones

Untreated Gemstones

Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.

Untreated Gemstones Weight
Untreated Gemstones Size
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Untreated Gemstones Treatment

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Yellow Untreated Gemstones
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8.07ctw Green Prehnite, Fancy, Translucent

14 x 9 mm (calibrated)

$ 13.26

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1.82ctw Green Demantoid Garnet, Oval, VS

4.3 x 3.5 mm

$ 199.40

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1.10ct Blue Kyanite, Oval, VS-SI

7.1 x 5.2 mm

$ 24.10

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3.76ctw Yellow Citrine, Round, VVS

8 mm (calibrated)

$ 29.96

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31.93ct Multicolor Jasper, Baguette, Opaque

25 x 18 mm (calibrated)

$ 15.75

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2.63ctw Yellow Sillimanite, Oval, VVS-VS

5.7 x 4.1 mm

$ 100.85

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1.66ct Orange Moonstone, Trillion, Translucent

8 x 8 mm (calibrated)

$ 3.30

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0.30ct Pink Morganite, Round, VS

4.7 mm

$ 12.45

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9.31ct Pink Rose Quartz, Pear Shape, Transparent

20.4 x 13.9 mm

$ 20.40

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1.62ctw Red Pyrope Garnet, Square, VS

5 x 5 mm (calibrated)

$ 12.42

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16.89ct Multicolor Labradorite, Oval, Opaque

22.4 x 16.1 mm

$ 15.14

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6.48ct Pink Kunzite, Emerald Cut, VS

12 x 8 mm (calibrated)

$ 171.03

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0.76ct Yellow Color-Change Diaspore, Emerald Cut, VS-SI

6.7 x 4.1 mm

$ 27.15

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4.57ct Pink Morganite, Round, Transparent

10 mm (calibrated)

$ 52.52

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0.60ct Orange Citrine, Oval, VS

7 x 5 mm (calibrated)

$ 5.98

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0.88ct Orange Zircon, Oval, VVS-VS

5.8 x 4.9 mm

$ 21.91

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0.83ct Green Tourmaline, Baguette, VVS-VS

10.8 x 3.1 mm

$ 28.93

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1.08ct Yellow Color-Change Diaspore, Pear Shape, VVS-VS

9.9 x 4.9 mm

$ 37.86

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18.03ct Black Obsidian, Oval, Opaque

24.7 x 16.8 mm

$ 29.64

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1.30ct Green Tourmaline, Emerald Cut, VS-SI

15.1 x 3.5 mm

$ 31.33

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20.47ct Multicolor Jasper, Oval, Opaque

25 x 18 mm (calibrated)

$ 23.55

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1.49ct Yellow Beryl, Oval, VVS-VS

9 x 7 mm (calibrated)

$ 29.68

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0.41ct Orange Spessartite Garnet, Oval, VS

4.9 x 3.9 mm

$ 14.29

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5.37ct Multicolor Labradorite, Marquise, Translucent

16 x 8 mm (calibrated)

$ 11.87

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Why Buy Untreated Gemstones from GemSelect?

Natural Untreated Gemstones

Our untreated gemstones are completely natural and have not undergone any enhancement processes. These gems display their original color and clarity as formed in nature, making them highly valued by collectors, jewelers, and gemstone enthusiasts.

Buy Untreated Gemstones Online

At GemSelect you can easily shop untreated gemstones online with confidence. Our inventory includes carefully sourced loose gemstones from around the world, with full transparency regarding treatments and gem origins.

Natural Untreated Loose Gemstones

Why Choose Untreated Gems?

Untreated gems are prized because they remain exactly as nature created them. Without heat or chemical treatments, these stones offer rarity and authenticity that many collectors and jewelry designers prefer.

Unheated Sapphire and Ruby

Some of the most sought-after untreated gemstones include unheated sapphire and ruby. These rare stones retain their natural color and are highly valued due to the absence of heat treatment commonly used to enhance corundum.

Gemstone Authenticity and Transparency

Every gemstone at GemSelect comes with clear treatment disclosure. When purchasing untreated stones, buyers can be confident they are receiving authentic gems that have not been altered by heat or other enhancement methods.

Untreated Gems for Custom Jewelry

Natural untreated gemstones are perfect for custom jewelry pieces. Their unique appearance ensures every ring, pendant, or pair of earrings features a one-of-a-kind gemstone created by nature.

Rare and Collectible Gemstones

Because many gemstones are routinely treated, truly untreated examples can be relatively rare. Collectors often seek untreated stones because they represent the most natural state of a gemstone.

Learn more about gemstone treatments and natural gem formation on our Gemstone Treatment Guide.

FAQs

What are untreated gemstones?

Untreated gemstones are natural gems that have not been enhanced with heat, chemicals, irradiation, or other treatments. They retain their original appearance as formed in nature.

Are untreated gemstones more valuable?

In many cases untreated gemstones are more valuable because they are rarer than treated stones. Natural color without enhancement is highly prized by collectors and investors.

How can I tell if a gemstone is untreated?

Gemstone treatment is typically determined through gemological testing. Reputable sellers like GemSelect clearly disclose whether a stone is untreated or has received any enhancements.

Which gemstones are commonly untreated?

Some gemstones frequently found untreated include garnet, spinel, peridot, and certain sapphires. However, many gem types may be treated depending on their origin and quality.

Are untreated gemstones suitable for jewelry?

Yes, untreated gemstones can be excellent for jewelry depending on their hardness and durability. Popular choices include sapphire, ruby, spinel, and garnet.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

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Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
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I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
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Great experience. I can't wait to explore on the website further.

Posted By Kymmie in September, 2025
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hassle free experience.

Posted By Jhidron in October, 2025
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Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
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Overall Rating -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
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